Test 1

Question 1

What type of contraction occurs in the quadriceps

Answer 1

Eccentric

Question 2

ATP is required for what during muscle contraction

Answer 2

Muscle relaxation only

Question 3

Smooth muscle:

Answer 3

Found in walls of most internal (hollow) organs

Contraction/ relaxation

Digestive tract is an example

Question 4

Order of fiber recruitment

Answer 4

1, 2a, 2x

Question 5

Which ion is most important for depolarization

Answer 5

Sodium

Question 6

Of membrane potential changes from -70 to -55 what will happen

Answer 6

An action potential will occur

Question 7

What are 3 muscle types

Answer 7

Smooth, skeletal and cardiac

Question 8

Sensory impulses that result in subconscious control of posture are in what part of the brain

Answer 8

cerebellum

Question 9

Cardiac muscle

Answer 9

Only found in heart

Involuntary

Question 10

General sensory input from muscles and joints is processed in the

Answer 10

Parietal lobe

Question 11

Which of the following is it associated with the sympathetic nervous system

Answer 11

Bronchodilation

Question 12

Type 1 muscles fibers are

Answer 12

Fatigue resistant

Question 13

If someone is having sobriety test trouble..

Answer 13

Cerebellum

Question 14

At rest which neuron ion gates are open

Answer 14

Calcium

Question 15

If the net effect of all graded potentials is hyperpolarization what will occur

Answer 15

Nothing will occur

Question 16

What is the correct order of contraction events

Answer 16

1. T-Tube AP
2. Calcium released
3. Cross bridge cycling occurs
4. Calcium gathered in

Question 17

Skeletal muscles are

Answer 17

Voluntary

Moves skeleton

Question 18

When the sarcolemma depolarizes which ion is involved

Answer 18

Sodium

Question 19

What type of ion channel is found only on axons

Answer 19

Ligand regulated sodium gates

Question 20

Which motor unit will be recruited first and why

Answer 20

The motor unit with the smallest motor neuron due to SIZE PRINCIPLE

Question 21

Why does a sarcomere that is too short or too stretched produce less force?

Answer 21

Not as many cross bridge cycling can form

Question 22

What type of rate coding will produce the most force

Answer 22

Tetanus

Question 23

Where do the highest levels of thought and perception occur

Answer 23

Cerebral cortex of the Gray Matter

Question 24

A motor unit with a neuron:fiber ratio of 1:20 will be innervating what?

Answer 24

Tensor tympani muscle of the ear drum

Question 25

Muscle glycogen is found where

Answer 25

Sarcoplasm

Question 26

Which group of hormones exerts metabolic and cardiovascular effects during exercise?

Answer 26

Catecholamines

Question 27

Which of these is a consequence of low plasma volume

Answer 27

Heart strain increases

Question 28

How many hormones does the anterior pituitary secrete?

Answer 28

6

Question 29

The primary purpose of ADH is to promote what?

Answer 29

Water retention

Question 30

Aldosterone release leads to what

Answer 30

Sodium retention followed by, water retention.

Question 31

For a given plasma concentration, hormone effectiveness can be altered by the

Answer 31

Number of cell receptors

Question 32

An example of a target call for glucagon would be

Answer 32

Liver cells

Question 33

Norepinephrine concentrations increase at ______ exercise intensity and epinephrine concentrations increase at ______ exercise intensity.

Answer 33

Moderate, high

Question 34

As exercise increases in duration, insulin levels _______ and glucagon levels ______.

Answer 34

Decrease, increase

Question 35

The posterior pituitary is controlled by what?

Answer 35

Hypothalamic nerve signals

Question 36

T3 and T4 are responsible for all of the following except

Answer 36

Inhibiting protein synthesis

Question 37

An increase in plasma osmolality is the stimulus for release of…

Answer 37

Aldosterone

Question 38

Why do plasma glucose concentrations start to decline after prolonged endurance exercise

Answer 38

Glycogen stores are depleted

Question 39

Renin is released when the…

Answer 39

Kidneys sense low blood volume and pressure

Question 40

As the rate of lipolysis increases…

Answer 40

Cellular FFA uptake increases

Question 41

Nonsteroid hormones are characteristically

Answer 41

Amino acid / protein based